31745043 has 12 divisors (see below), whose sum is σ = 50022648. Its totient is φ = 19239360.

The previous prime is 31745041. The next prime is 31745057. The reversal of 31745043 is 34054713.

It is not a de Polignac number, because 31745043 - 2¹ = 31745041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31744998 and 31745016.

It is not an unprimeable number, because it can be changed into a prime (31745041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160230 + ... + 160427.

It is an arithmetic number, because the mean of its divisors is an integer number (4168554).

Almost surely, 2^31745043 is an apocalyptic number.

31745043 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31745043 is a deficient number, since it is larger than the sum of its proper divisors (18277605).

31745043 is a wasteful number, since it uses less digits than its factorization.

31745043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320674 (or 320671 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 31745043 is about 5634.2739550008. The cubic root of 31745043 is about 316.6347965464.

Adding to 31745043 its reverse (34054713), we get a palindrome (65799756).

The spelling of 31745043 in words is "thirty-one million, seven hundred forty-five thousand, forty-three".